Rudder



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WALTER N. DAVIS, 0F RICHMOND, NEW YORK.

UNITED STATES RUDDER..

Specification of Letters Patent. Pajentd Dec/ 28v 1920.

Application filed October 8, 1920. Serial No. 415,508.

To all 'whom it may concern Be it known that I,`WALTER N. Davis, a citizen of the United States, and a resident of the borough of Richmond, city of New York county of Richmond, and Stateof New LYork, have invented Improvements in Rudders, of which the following is a specilication.

My invention relates t'o rudders and more particularly to a temporary or emergency rudder such as is employed .only when the usual rudder is disabled and cannot be immediately repaired or replaced. Under such circumstances dry dock facilities or divers are usually unavailable and accordingly the first requisite of a temporary or emergency rudder is adaptability to be placed into position while the ship is afloat by men working above the water. Inasmuch as the need for a temporary or emergency rudder may arise during rough weather it is also desirable that the rudder be so positioned and formed that it will not be carried away by heavy seas.

The object of my invention is to produce a temporary or emergency rudder satisfying these requirements and in the drawings accompanying this specication and fcrming a part thereof I have shown, for purposes of illustration, several embodiments which my invention may assume. In these drawin s,

gFigures 1 and 2 are respectively side and end views of one possible embodiment in position beneath a ship;

Fig. 3 is a side view of a second embodiment; and

Figs. 4 and 5 are respectively side and end views of a third embodiment.

Referring to Figs. 1 and 2 it will be seen that my iudder consists of an angular frame 11 braced between its ends by a strut or cable 12 and provided with a plurality of holes 13, 14, and 15 for the reception of cables lf3-17, 18-19, and 20-21, the cables 16, 18, and 20 being passed up o ne side of a ship and secured thereto at a point readily accessible and the cables 17, 19, and 21 being passed up the other side of the ship and similarly secured. Pivoted upon the vertical portion 22 of the angular frame 11 is the blade and this blade is provided with an aperture 24 by means of which cables 25 and 26 may be secured to the rudder. These cables are then passed up opposite sides of the ship to a point where they will be accessible for operation of the rudder. This may conveniently be done in the manner shown in Fig. 2 where the cables are passed o ver pulleys on outriggers 27 and then carried to a winch 28. It will be apparent, however, that the cables could also be connected to the regular steering mechanism. The two cables 16 and 17 are preferably secured to the ship at a point forward of the rudder while the two cables 18 and 19 are preferably secured to a point aft and the two cables 20 and 21 preferably have no inclination either way. In this manner the cables 16-17 and 18--19 prevent forward and backward movement of the rudder mechanism while the cables 20-21 exert a maximum bracing effect. The rudder is preferably located toward the stern but sufficiently forward to enable the cables 25 and 26 to clear the propeller, if there be one, by a safe distance.

The frame 11 employed in the device of Figs. 1 and 2 is not likely to be available on ship board and accordingly this form of my device could probably only be employed when the ship was so situated as to render the services of a blacksmith available. The modification disclosed in Fig. 3 employs in place of the frame 11 an anchor 29 and in this way obviates the objection to the device of Fig. 1. When an anchor is used one end of the stock is cut off as shown at 30 while the other end forms the pivot post 31 for the rudder and provides facilities for attaching the ends of the cables 2O and 21. The same strut or cable 12 is employed to brace the parts but the cables 16-17 are preferably secured to the linkes in order to assist the cables 20-21 in their bracing action.

A still simpler form of rudder is disclosed in Figs. 4 and 5 wherein a few spars lashed together or a stock of timber is slung bei neath the shin by means of chains or cables 32 and 33 attached to the timber and tensioned to hold that point of the timber stationary. Further chains 34 and 35 are attached to the timber at the rear end and carried up in the same manner as the chains 25 and 26 of the devices of Figs. 1 and 3 to permit the timber to be swung in a horizontal plane about the point of attachment of the chains 32 and 33 as a center to thus steer the ship.

It will be obvious from the above description that any one of these forms of rudder soV may be slung under the ship and accurately positioned without dry dock or diving facilities. lt will also be apparent that the arrangement herein disclosed positions the rudder at a point where it is below the action of the waves and accordingly removed from the danger of destruction by a heavy sea.

It will be understood that the disclosure herein is for purposes of illustration and my invention is, therefore, not limited to the embodiment herein disclosed.

I claim:

l. A temporary rudder comprising supportingmeans secured to the ship, a blade pivoted to said supporting means at a point beneath the keel of said ship, and means for swinging said blade on its pivot to thus steer said ship.

2. A temporary rudder comprisingsupporting means secured to a readily accessible portion o the ship, a blade pivoted to said supporting means at a point beneath the keel of said ship, and means for swinging said blade on its pivot to thus steer said ship.

3. A temporary rudder consistingof supporting means comprising cables secured to the ship, a blade pivoted te said supporting means at a point beneath the keel of said ship, and means for swinging said blade on its pivot to thus steer said ship.

et. A temporary rudder consisting of supporting means comprising cables secured to a readily accessible portion of the ship, a blade pivoted to said supporting means at a point beneath the keel of said ship, and means for swinging said blade on its pivot to thus steer said ship.

5. A temporary rudder comprising supporting means secured to the ship, a blade pivoted to said supporting means at a point beneath the keel of said ship, and means for swinging said blade on itspivot to thus steer said ship, said last means comprising cables extending to the deck of the ship.

6. A temporary rudder comprising supporting means secured to the ship, a blade pivoted to said supporting mean-s at a point beneath the keel of said ship, andi meansfor swinging said blade on its pivot to thus lst eer Vsaid ship, said last means comprising 'cables extending to the deck of the ship through outriggers.

7. A 'temporary rudder comprising supporting means secured to a readily accessible portion of the ship, a blade pivoted to said supporting means at a point beneath the keel of said ship, and means for swinging said blade on itsl pivot-to thus steer said ship, said last means comprising cables extending to the deck of the ship.

8. A temporary rudder comprising supporting means secured tothe ship, a blade pivoted to said supporting lmeans at a point beneath the keel of said ship, and means for 65 swinging said blade on its pivot to thus steer said ship, said'l-ast means comprising lcables extending up the sides of the ship to vthe usual steering. gear.

9. A temporary rudder comprising supporting means `secured tol'a readily accessible portion of the ship, a blade pivotedfto said supporting means ata point-'beneath the# keel of said ship,'and meansfo'rfswinging said blade on its pivotto vthus steer said ship, said last means'eompr-ising cables extending up the sides of the shiptofthe 'usualsteermg gear.

l0. A temporary rudder' coi'nprisingl cables secured to a readily; accessible-portion of' the ship, a blade pivoted to said supporting means at a point 'b'eneatlVthekee'l-ot said ship, and means vfor swinging said bl'adeon its pivot to thus steer'sai'dship, said last means comprising'cables extending up 'the sides of the ship to the-usual'steering-gear.

ll. The method of rigginglatemporary rudder which-comprises pivotallysecuring a blade to one or vrIm'orep'ai'rs of cables, fixing a pair of operatingcables lto said blade at a point Yremote from' the f* pivot l thereof; slinging the entire device beneath the ship with the cablesoif eaeh'pair-'on 'opposite' sides of the ship, Yfastening the :securing cables te pivotally mount the blade beneathtlre keel, andlpas'sing the operating cables to a point where they are accessible to operate said blade and' thus' steer said ship.

In testimony whereof, I have signed my name toithisspecic'ation this 6th day ofc- 100 tober, 1920. x

WVALTER :'N. )DAVIS 

